Granted Patent
Utility
US 5,979,577 · App. 09/149,196
Stabilizing drill bit with improved cutting elements
Inventor:
Coy M. Fielder
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Sep 8, 1998
Inventor
Coy M. Fielder
Assignee (at issue)
Diamond Products International, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.